US20140236302A1 - Shoulder inter-spacer component and surgical method of implantation - Google Patents
Shoulder inter-spacer component and surgical method of implantation Download PDFInfo
- Publication number
- US20140236302A1 US20140236302A1 US14/266,103 US201414266103A US2014236302A1 US 20140236302 A1 US20140236302 A1 US 20140236302A1 US 201414266103 A US201414266103 A US 201414266103A US 2014236302 A1 US2014236302 A1 US 2014236302A1
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- inter
- spacer
- shoulder
- glenoid
- implant
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/40—Joints for shoulders
- A61F2/4081—Glenoid components, e.g. cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30721—Accessories
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/562—Implants for placement in joint gaps without restricting joint motion, e.g. to reduce arthritic pain
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30461—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30721—Accessories
- A61F2002/30754—Implants for interposition between two natural articular surfaces
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
Definitions
- a typical keel or peg design can broach the glenoid vault and injure the suprascapular nerve along the suprascapular notch or spinoglenoid notch with resultant denervation injury to the rotator cuff muscles. Broaching through the glenoid vault can also fracture the body of the scapula and cause early implant loosening.”
- FIG. 3 is a cross sectional view of the shoulder inter-spacer taken along lines 3 - 3 of FIG. 1 .
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Vascular Medicine (AREA)
- Transplantation (AREA)
- Pain & Pain Management (AREA)
- Rheumatology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
Abstract
A shoulder inter-spacer implant has a first outer surface having a contoured profile simulating a glenoid surface and a second inner surface for resting on an outer surface of a prepared glenoid. The second inner surface has a flat or contoured profile void of any pegs, keels or bone interlocking projections so that the second inner surface is profiled to rest on the surface of the prepared glenoid when implanted free of any direct anchoring or cementing to the bone structure. In this fashion the inter-spacer is free to move or slide on the prepared glenoid. The inter-spacer may include one or more soft tissue attachment locations to which a tendon, cartilage, ligament or other soft tissue can be secured, the inter-spacer being otherwise free floating relative to the prepared glenoid.
Description
- This application is a divisional of U.S. application Ser. No. 13/187,632 filed on Jul. 21, 2011 entitled “A Shoulder Inter-Spacer Component And Surgical Method Of Implantation”.
- The present invention relates to the field of shoulder repair or replacement, more particularly to an improved implant device and method for glenoid repair or replacement.
- The invention provides an improved glenoid shoulder implant.
- Shoulder replacement surgery is currently used to treat patients having worn or damaged shoulder joints. Glenoid shoulder socket implants are typically made completely from high or ultra high density polyethylene and affixed to the cortical bone using bone cement, polymethylmethacrylate. Some glenoid implants have a metal base plate with a polyethylene insert. Current glenoid implants use either a keel or multiple pegs on the back or inner surface of the prosthetic glenoid implant to anchor and secure the glenoid implant rigidly fixed to the inside the glenoid vault.
- In US patent publication 2011/0112648 entitled “Methods For Less Invasive Glenoid Replacement” a litany of problems of the current practice of glenoid repair is recited. It was reported that, “Keeled and pegged glenoid implants suffer from several disadvantages, which limit their lifespan once implanted and reduce the number of indications for which they can be used when the age of the patient is a factor. For example, the glenoid implants can loosen due to poor fixation within the bone, and they are prone to wear and fatigue failure of the polyethylene due to adhesion, abrasion, and shear stress. Because of these deficiencies, surgeons hesitate to perform glenoid replacement surgery on young or middle aged patients with glenoid articular cartilage injuries or damage due to early arthritis for fear that the implant may not last more than 10-15 years in the body, thus subjecting the patient to the possibility of two or more surgeries during the lifetime of the patient to preserve the function and pain-free state of the joint. Finally, current glenoid implants with a long keel or pegs are sometimes contraindicated in patients with significant glenoid bone loss. As arthritis progresses, the humeral head can wear medially and destroy the foundation of glenoid bone. In these cases, the glenoid vault can be significantly reduced in volume and depth. Thus, a typical keel or peg design can broach the glenoid vault and injure the suprascapular nerve along the suprascapular notch or spinoglenoid notch with resultant denervation injury to the rotator cuff muscles. Broaching through the glenoid vault can also fracture the body of the scapula and cause early implant loosening.”
- The inventors in US 2011/0112648 went on to state, “There are also several disadvantages associated with current glenoid replacement surgical techniques. Current techniques require extensive shoulder exposure with capsular releases in order to fully expose the glenoid surface circumferentially. Since the axillary nerve is located within 1 cm of the inferior capsule, there is potential risk of axillary nerve injury with resultant denervation injury to the deltoid muscle when these releases are performed. However, use of the current keeled or pegged glenoid implants requires this extensive glenoid exposure for proper fitting and placement. Current glenoid replacement surgery also requires a long skin incision and extensive soft tissue stripping in order to fully expose the glenoid circumferentially, which produces a cosmetically unappealing scar. Finally, current glenoid replacement surgical techniques require advanced surgical training and expertise within the specialty of shoulder surgery, yet the majority of shoulder implants performed in the U.S. every year are performed by orthopedic surgeons who do not have advanced training in the subspecialty of shoulder surgery. Therefore, many surgeons have difficulty preparing the glenoid site for a total shoulder replacement using the current techniques. Because there are more than 20,000 shoulder arthoplasty surgeries performed per year, many U.S. patients incur a risk of continued pain and disability, neuromuscular injuries, or failed shoulder prostheses requiring revision surgery. Thus, there remains a need for an improved glenoid implant and improved methods for performing replacement shoulder surgery.”
- Their solution to these listed deficiencies was stated in US 2011/0112648 to be: a glenoid implant itself includes a (1) body portion having (i) a smooth concave lateral articulating surface facing away from the scapula, which is adapted to be engaged by a convex surface of a humeral component, and (ii) an opposing surface on the medial side intended to be positioned within a cavity reamed in the glenoid. In their embodiment, the glenoid implant also includes (2) a short peg on the medial side extending centrally outward along an axis from a convex or flat backside (medial) surface of the glenoid implant. In the preferred embodiment, the short peg of the glenoid implant is less than about 10 mm long, more preferably about 8 mm or less in length, even more preferably about 5 mm or less in length. Alternatively, the glenoid implant has multiple pegs, each of which can be the same length or different lengths, e.g., less than about 8 mm or less in length, more preferably about 5 mm or less in length. In another embodiment, at least one of the pegs is between about 5 mm and about 8 mm in length and the remaining pegs are less than about 8 mm in length.
- This prior art glenoid implant was secured to the glenoid using cement fixation or press fit technique. In yet another preferred embodiment, the glenoid implant is further secured to the glenoid using screws in press fit designs.
- In fact the teaching of US 2011/0112648 are simply a minor adjustment in the typical or current prior art techniques. Their implant device still requires the anchoring and permanent fixation of the implant to the glenoid vault and furthermore requires bone removal to accomplish this albeit less than required with the older styled elongated pegs and keel. Their shortened pegs still require bone cavities to be created and the optional method of screwing the implant to the bone and the use of bone cementing all of which are well known and accepted practices.
- Nevertheless, this prior art document does reflect an accurate portrayal of the problems occurring in this type of surgery.
- The present invention as described below solves several of the problems in a completely unique way heretofore never attempted.
- A shoulder inter-spacer implant has a first outer surface having a contoured profile simulating a glenoid surface and a second inner surface for resting on an outer surface of a prepared glenoid. The second inner surface has a flat or contoured profile void of any pegs, keels or bone interlocking projections so that the second inner surface is profiled to rest on the surface of the prepared glenoid when implanted free of any direct anchoring or cementing to the bone structure. The second inner surface may optionally include a roughened or textured surface to facilitate positioning and limiting movement, but does not include any rigid fixation to the glenoid such as cement or screws. In this fashion the inter-spacer is free to move or slide on the prepared glenoid. The inter-spacer may include one or more soft tissue attachment locations to which a tendon, cartilage, ligament or other soft tissue can be secured, the inter-spacer being otherwise free floating relative to the prepared glenoid.
- Use of this shoulder inter-spacer is best summarized by the following method. A method of treating a patients shoulder has the steps of a) identifying a patient having a weakened or damaged glenoid surface needing repair or replacement; b) surgically exposing the shoulder having a weakened or damaged glenoid; c) inserting a shoulder inter-spacer having a glenoid surface over the weakened or damaged glenoid surface or a surgically prepared surface of the glenoid wherein the spacer is free floating relative to the glenoid bone structure and is positioned between the humeral head and the glenoid being repaired or replaced; and d) surgically closing the exposed shoulder.
- The method may further have the step of attaching at least one of a ligament, cartilage, tendon or other soft tissue to the shoulder inter-spacer to assist in positioning the free floating spacer between the humeral head and the repaired glenoid. The method may further include surface preparation of the glenoid by removing the weakened or damaged glenoid surface and providing a generally flat or slightly contoured surface onto which the inter-spacer is positioned, the implant rests on prepared glenoid surface in the absence of mechanical protrusions, pegs or a keel and the preparation of the glenoid is accomplished in the absence of bone tissue removal to form internal fixation cavities. The inter-spacer not being rigidly anchored or otherwise secured to the bone structure by mechanical means including screws or fasteners. The otherwise free floating inter-spacer can have non-rigid soft tissue attached to a peripheral or an exterior surface of the inter-spacer to facilitate positioning the inter-spacer between the humeral head and the surgically prepared glenoid prior to closing the exposed shoulder.
- The invention will be described by way of example and with reference to the accompanying drawings in which:
-
FIG. 1 is a front perspective view of an exemplary circular shoulder inter-spacer for use as a glenoid implant of the present invention. -
FIG. 2 is a rear perspective view of the shoulder inter-spacer ofFIG. 1 . -
FIG. 2A is a view taken fromFIG. 2 showing an optional textured or roughened second surface. -
FIG. 3 is a cross sectional view of the shoulder inter-spacer taken along lines 3-3 ofFIG. 1 . -
FIG. 4 is a plan view of a normal shoulder showing the relative position of the humeral head and the glenoid surface. -
FIG. 5 is a view of a repaired shoulder with the inter-spacer shown positioned between the humeral head and the surgically prepared glenoid surface. -
FIG. 6 is a view of the shoulder inter-spacer with soft tissue attached. - With reference to
FIG. 4 a normal shoulder is shown. Often thehumeral bone 30 or the glenoid 20 can become worn or damaged and a surgical repair or replacement is required. - With reference to
FIGS. 1-3 , there is shown anexemplary shoulder inter-spacer 10 of the present invention. As illustrated, theshoulder inter-spacer 10 has a generally oval or circular disk like shape with a first orfrontal surface 12 having a shallow concavity formed by one or more radii of curvature. Thefront surface 12 is shaped to duplicate or replicate the surface profile of the glenoid fossia. The shoulder inter-spacer 10 exhibiting this firstfrontal surface 12 formed to replicate the glenoid surface enables the inter-spacer 10 to be used in a glenoid replacement or repair procedure. - With reference to
FIG. 2 , the rear perspective of theshoulder inter-spacer 10 is illustrated showing a second orrear surface 14. The second or rear surface as shown has a generally flat or slightly contoured surface that is devoid of any projecting pegs or keels. Thissecond surface 14 is made to rest on the exterior outer surface of a glenoid which has been prepared to accept the inter-spacer 10. As shown inFIG. 2A , thesecond surface 14 may optionally include a roughened or texturedsurface 17 to facilitate positioning and limiting slipping movement, but does not include any rigid fixation to the glenoid surface such as pegs, keels, cement or fixation screws. - As further illustrated in the cross sectional view of the inter-spacer 10, the first
frontal surface 12 more clearly shows the hollow concavity that mimics or replicates the glenoid surface. When implanted, the inter-spacer first orfrontal surface 12 is in contact with the humeral head. The thickness of the inter-spacer 10 can vary slightly from a minimum at the center to a maximum radially outwardly as shown. The profile of thefrontal surface 12 is a shallow curvature formed by two or more radii approximating the curvature of the normal glenoid. - As illustrated, the inter-spacer 10 is preferably made of a synthetic thermoplastic such as a high density polyethylene. What is a most distinguished feature of the inter-spacer 10 is the second or
rear surface 14 has no fixing or anchoring features projecting from it. In fact, such features are avoided and not desirable. Additionally, there are no holes or apertures in the shoulder inter-spacer 10 for allowing fasteners or screws to be used to anchor or fix to the underlying bone tissue. Remarkably, the use of such anchoring or fixing devices to secure the inter-spacer 10 to the bone tissue is not needed and more importantly are undesirable. - The inter-spacer 10 is designed to rest on and essentially be free floating relative to the glenoid cavity on which it rests. Remarkably, no bone cement is needed either. The concept of the
shoulder inter-spacer 10 relies on the fact that the inter-spacer is allowed to move slightly between the preparedglenoid surface 20 and thehumeral head 30 which effectively holds the inter-spacer 10 between these two anatomical features as shown inFIG. 5 . - In
FIG. 6 , theshoulder inter-spacer 10 optionally can have one ormore holes 11 on the side orperipheral edge 15 of the inter-spacer 10. Theseholes 11 are provided to allow soft tissue such as cartilage, ligaments or tendons to be attached. These soft tissue attachments provide an optional facilitation of holding the inter-spacer 10 in relative position without impeding or over restricting the free floating ability of the inter-spacer 10 relative to the adjacentglenoid surface 20 on which the second orrear surface 14 rests. While this attached soft tissue may be attached to the bone structure, it can stretch and move enough to let the inter-spacer 10 float when implanted. Preferably theholes 11 may be threaded to accept a fixation screw of fastener. - What is unique and remarkable about the
shoulder inter-spacer 10 is that it is deliberately made to be loose relative to the underlying bone structure. Accordingly, unlike fixed and cemented implants which are considered surgical failures when the implants become loose because the underlying bone tissue has been weakened by the removal of large amounts of bone tissue and a loose implant with projections such as pegs and keels can break the weak bone as it moves, the present invention avoids these complications. When the present device is used very little bone tissue needs to be removed to create anchoring cavities. Instead the patient's bone structure is substantially left intact and only the damaged glenoid surface bone tissue needs to be removed to form a substantially flat or slightly contoured surface like a table top for the shoulder implant to float on. Remarkably, this procedure is very reliable in the sense that a list of unnecessary bone preparation procedures are avoided, risk of complications are reduced due to bone fractures and the entire complexity of cementing a peg or keel in a fluid filled bone cavity carved into the patients bone is avoided. Secondarily, the surgeons skill level while still extremely important is less critical because some of the most difficult and delicate aspects of surgically preparing the bone tissue are eliminated. - The patient having an inter-spacer 10 implanted as described above will also experience far less pain and damage and the healing prospects and recovery will be improved due to this simplified procedure.
- Variations in the present invention are possible in light of the description of it provided herein. While certain representative embodiments and details have been shown for the purpose of illustrating the subject invention, it will be apparent to those skilled in this art that various changes and modifications can be made therein without departing from the scope of the subject invention. It is, therefore, to be understood that changes can be made in the particular embodiments described which will be within the full intended scope of the invention as defined by the following appended claims.
Claims (16)
1. A shoulder inter-spacer implant comprises:
a spacer having a first outer surface having contoured profile simulating a glenoid surface and a second inner surface for resting on the outer surface of a glenoid.
2. A shoulder inter-spacer implant of claim 1 wherein the second inner surface has a flat or contoured profile.
3. A shoulder inter-spacer implant of claim 2 wherein the inner surface flat or contoured profile of the inner surface is void of any pegs, keels or projections, the inner surface being profiled to rest on the surface of the glenoid when implanted.
4. A shoulder inter-spacer implant of claim 3 wherein the second inner surface is smooth, roughened or textured.
5. A shoulder inter-spacer implant of claim 3 wherein the inter-spacer may include one or more soft tissue attachment locations to which a tendon, cartilage, ligament or other soft tissue can be secured, the inter-spacer being otherwise free floating relative to the glenoid.
6. A shoulder inter-spacer implant of claim 1 wherein the inter-spacer is a synthetic thermoplastic.
7. A shoulder inter-spacer implant of claim 6 wherein the synthetic thermoplastic is a high density plastic.
8. A shoulder inter-spacer implant of claim 7 wherein the high density plastic is polyethylene.
9. A shoulder inter-spacer implant of claim 1 wherein the spacer has an oval or circular disk shape.
10. A shoulder inter-spacer implant of claim 1 wherein the first outer surface has a shallow concavity formed by one or more radii of curvature.
11. A shoulder inter-spacer implant of claim 1 wherein the first outer surface mimics or replicates the glenoid surface.
12. A shoulder inter-spacer implant of claim 1 wherein the thickness of the inter-spacer varies from a minimum at a center to a maximum radially outwardly.
13. A shoulder inter-spacer implant of claim 1 wherein the inter-spacer is sized to rest on and be free floating relative to a glenoid cavity on which it rests.
14. A shoulder inter-spacer implant of claim 1 wherein the second surface is roughened or textured.
15. A shoulder inter-spacer implant of claim 1 wherein the inter-spacer is sized to be free to move or slide on a glenoid surface.
16. A shoulder inter-spacer implant of claim 1 wherein the inter-spacer is made loose relative to the underlying bone structure when implanted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/266,103 US20140236302A1 (en) | 2011-07-21 | 2014-04-30 | Shoulder inter-spacer component and surgical method of implantation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/187,632 US20130023998A1 (en) | 2011-07-21 | 2011-07-21 | Shoulder inter-spacer component and surgical method of implantation |
US14/266,103 US20140236302A1 (en) | 2011-07-21 | 2014-04-30 | Shoulder inter-spacer component and surgical method of implantation |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/187,632 Division US20130023998A1 (en) | 2011-07-21 | 2011-07-21 | Shoulder inter-spacer component and surgical method of implantation |
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US20140236302A1 true US20140236302A1 (en) | 2014-08-21 |
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US13/187,632 Abandoned US20130023998A1 (en) | 2011-07-21 | 2011-07-21 | Shoulder inter-spacer component and surgical method of implantation |
US14/266,103 Abandoned US20140236302A1 (en) | 2011-07-21 | 2014-04-30 | Shoulder inter-spacer component and surgical method of implantation |
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US13/187,632 Abandoned US20130023998A1 (en) | 2011-07-21 | 2011-07-21 | Shoulder inter-spacer component and surgical method of implantation |
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US9681960B2 (en) | 2014-05-16 | 2017-06-20 | Howmedica Osteonics Corp. | Guides for fracture system |
US10575968B2 (en) | 2014-05-16 | 2020-03-03 | Howmedica Osteonics Corp. | Guides for fracture system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387240A (en) * | 1990-11-14 | 1995-02-07 | Arch Development Corporation | Floating bearing prosthetic knee |
US20030060883A1 (en) * | 1999-05-10 | 2003-03-27 | Fell Barry M. | Surgically implantable knee prosthesis having attachment apertures |
US20040133276A1 (en) * | 2002-10-07 | 2004-07-08 | Imaging Therapeutics, Inc. | Minimally invasive joint implant with 3-Dimensional geometry matching the articular surfaces |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6398812B1 (en) * | 2000-02-10 | 2002-06-04 | Medidea, Llc | Shoulder prosthesis with anatomic reattachment features |
WO2006132661A1 (en) * | 2005-06-06 | 2006-12-14 | Massachusetts General Hospital | Tough hydrogels |
US20080097606A1 (en) * | 2006-10-19 | 2008-04-24 | Cragg Andrew H | Knee joint prosthesis and hyaluronate compositions for treatment of osteoarthritis |
-
2011
- 2011-07-21 US US13/187,632 patent/US20130023998A1/en not_active Abandoned
-
2014
- 2014-04-30 US US14/266,103 patent/US20140236302A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5387240A (en) * | 1990-11-14 | 1995-02-07 | Arch Development Corporation | Floating bearing prosthetic knee |
US20030060883A1 (en) * | 1999-05-10 | 2003-03-27 | Fell Barry M. | Surgically implantable knee prosthesis having attachment apertures |
US20040133276A1 (en) * | 2002-10-07 | 2004-07-08 | Imaging Therapeutics, Inc. | Minimally invasive joint implant with 3-Dimensional geometry matching the articular surfaces |
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US20130023998A1 (en) | 2013-01-24 |
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